Hand-stamp.



No. 634,371. Patented Oct. 3, |899. L-. K. SCDTFORD.

HAND STAMP.

(Application led Feb. 27, 1899.)

(No Model.)

f ilmmmi v UNITED STATES PATENT OFFICE. g

LOUIS K. SCOTFORD, C F CHICAGO, ILLINOIS, ASSIGNOR TO THE INDEPEND- EN'I` MANUFACTURING COMPANY, OF SAME PLACE.

HAN D-STAlVl P.

SPECIFICATION forming' part of Letters Patent No. 634,371, dated October 3, 1899.

Application filed February 27, 1899. Serial No. 707,001. (No model.)

To all whom, it may concern:

Be it known that I, LoUIs K. ScoTroRD, of Chicago, in the county of Cook and State of Illinois, have invented cert-ain new and useful Improvements in Hand-Stamps; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had tothe accompanying drawings and to the letters of reference marked thereon,

ro which form a part of this specification. l

This invention relates to self-inking handstamps of that class provided with a forked handle which has sliding connection with the main part or frameof the stamp and with an t 5 oscillating or reversible die-plate pivoted to the arms or forks of the handle and in which said die-plate is moved to carry it against an inking -pad supported in the frame and against the surface to be printed by a rela= 2o tive movement of said handle and frame.

' My invention embraces more particularly improvements in the devices for causing the rotation or oscillation of the die-plate; and it consists in the matters hereinafter described, and pointed out in the appended claims.

The invention may be more readily understood by reference to the accompanying drawings, in which-l- Figure 1 is a view in side elevation of'a hand-stamp embodying my invention. Fig. 2 is a central vertical section of the main or lower part of the stamp, taken on line 2 2 of Fig. l and showing the die-plate lifted and in contact with the inking-pad. Fig. 3 is a similar sectional view showing the handle depressed and the die-plate in position for printing. Fig. a is a detailed plan section taken through one of the end plates of the 4o stamp-frame on line 4t 4 of Fig. 2. Fig. 5 is a detail view of the lower end of one of the guide-plates by which rotative motion is given to the die-plate. Fig. 6 is a similar view showing a modified construction in said guideplate.. Fig. 7 is a face View of the lower end of the guide-plate shown in Fig. 6. Fig. 8 is a face view of the lower end of the guideplate, illustrating a still further modification thereof. Fig. 9 is an edge view of the lower 5o end of the die-plate shown in Fig. 8.

The main part or frame of the hand-stamp shown in the drawings is made in a familiar manner with vertical end plates or standards A A, each of which is provided with a central vertical slot Ct, said end plates being rigidly connected with each other by means of a top plate A2 and transverse connecting-rods A' A', located near the lower ends of said end plates. The top plate A2 is recessed upon its under side to receive an inking-pad A3.

B is the handle, which is provided with parallel arms I3 B, whichextend outside of the end plates of the frame and are attached at their lower ends to a horizontal rod C, which passes through the slots a a in said end plates and pivotally supports the die-plate D. The top plate A2 is provided with a guide-rod A4, which enters the handle B, a spring being located between said guide-rod and the handle which operates to retain the handle normally at the upward limit of its movement in a familiar manner.

To the ends of the oscillating die-plate D, at right angles thereto and parallel with the end plates A A, are aflixed guide-plates E E, through which the pivot-rod C passes, and each of which is provided at its end adjacent to the die-plate with two' cam-slots c e, and at its outer end, or that remote from the dieplate, with two cam-slots e' c'. The cam slots c e nearest the die-plate are curved inwardly toward each other at their ends, while the cam-slots c' c' are at the same distance apart as the outer ends of said guide-slots c e, or the parts thereof which are most widely separated. The said guide-slots open into a central opening in the guide-plate, as clearly shown in the drawings. The guide-slots of both guide-plates are engaged by two stationary guide-studs F F', fixed in the end plates of the frame and projecting inwardly therefrom. Said guide-studs F F at each end of the stamp are arranged in the same vertical plane and both at the same side of the central vertical line of the stamp-frame in such manner that when the upper guidestud F is engaged with one, as e, of the guideslots the lower guide-stud F will be engaged with the other, as c', of said slots.

In the operation of the stamp the action of said guide-slots and the guide-studs engaged therewith is as follows: As the pivot-rod C is depressed the die-plate is carried away from l sel-ting the dieplate between the standards the inking-pad by the movement ofthe pivotrod C, and the upper guide-stud F, which is plate until it reaches the end of the said slot of the main frame and then passing thc pivotrod C through the slots of the end plates and nearest the hiking-pad, moves along the gu idcslot e and toward the pivotal axis of the dicnearest the die-plate, when by the contact oi' g said stud with the outer wall of the slot the guide-plate is held from further downward xnoveincnt,and the die-plate is thereby caused to rotate about the pivot-rod C as the latter is pushed downward past the said guide-stud i F. After the pivot-rod has been carried past the said guide-stud the latter will then move in the guide-slot backwardly away from the die-plate, so that when the pivot-rod C has accom plishcd half of its downward movement through the apertures formed for'said pivotrod in the guide-plates. It is highly desirable for economy of construction that these main parts should be made complete before being assembled-that is to say, that the guidestuds should be inserted in the end plates and the guide plate or plates should be permanently secured to the die-plate bcfore the main parts are assembled--and in order to enable the said guide-studs to be brought into proper engagement with the guide-plates I provide cach guide-plate in its outer face with a groove or notch, through said guide-stud F will stand in the open end of the slot c with which it was first engaged, l while the lower guide-stud F will occupy a K similar position in the corresponding guideslot c at the opposite side of the guide-plate.

In the movement of the dic-plate and the guide-plate above described the lowermost guide-stud F', which when the die'plate is in which the guide-studs may be passed in inserting the die-plate between the end plates of the frame, said groove or notch being located in the guide-plate elsewhere than in the portions oi' said guide-grooves c e which are engaged by the guide-studs at the time of inking or printing or in the turning of the dieplate. Moreover, inasmuch as the guide-plate l will commonly be much thinner than the by the upper guide-stud F, this being the position which said lower guide-stud occupies when the die-plate reaches its central position or has completed the first hall" of its downward movement.

In the downward movement of the pivotthe latter passes the said guide-stud and then moves backwardly in the slot until the dieplate is brought into contact with the surface to be printed upon. Said guide-stud F acts to hold the die-plate horizontal while the impression is being made, as clearlyseen in Fig.

In the second er lower half of the movement of the handle the upper guide-stud is carried into the guide-slot c, which is at that time at the same side of the guide-plate at which the guide-studs are located, and while the impression is being made said upper guide-stud occupies said slot e' and aids the guide-stud F in holding the die-plate accurately parallel with the surface to bc printed upon at the time of printing.

So far as above described the stamp illustrated is generally similar in construction and operation to other stamps heretofore made.

In the construction of stamps having a frame and a die-plate provided with a guide plate or plates made as described these partsnamely, the main frame and the die-plate, with its guide plate or platesare constructed separately and afterward assembled by inlength of the studs I form such groove or notch by bending or offsetting the metal guide-plates in such manner as to give proper form to said notch or groove, while at the same time leaving intact or continuous the marginal parts of the guide-plate, which by reason oi' the central opening formed therein for the passage of the studs are in effect of ring shape. In the drawings several different ways are illustrated in which the notch or groove referred to may be made.

As illustrated in Figs. 2, 3,4, and 5, Giudicates the notch referred to, which in this Ainstance is located at the outer extremity ofthe guide-plate E, between the guide-grooves e'c, and is formed in a lip or flange E', made integral with thc guide-plate and bent at right angles with the same, so as to constitute a rigid connection between the end portions of the guide-plate at opposite sides of said notch, the notch in this instance being formed by cutting a slot in the end portion of the guideplate, which slot terminates at such distance from the extremity of the projecting part constituting said lip or flange E' that when the latter is bent at right angles to the body of the plate the said notch will extend a sufficient distance inwardly from the outer surface of the plate to give room for the passage of the said guide-studs. Both of the guidel plates being made alike in this respect, it is obvious that the die-plates, with the guideplate attached, may be easily slipped into place in the frame notwithstanding the presence of the said guide-studs.

As illustrated in Figs. G and 7, a notch or groove G is located in the same position as the notch G before described, and said notch is formed by means of a part E2 of the metal forming the end portion of the guide-plate, which part E2 Vis bent or olset inwardly from the plane of the guide-plate bythe use of IIO swaging-dies or in any other suitable manner, so as to form an otset or yoke of such size as to make the notch or groove of suiiicient depth for the passage of the guide-studs. The metal constituting the said yoke E2 is in this instance necessarily stretched or expanded in the swaging operation to give suitable length to said part. It is not, however, necessary that the notch or groove referred to should be formed in the extremity of the guide-plate, and in Figs. S and 9 I have shown a notch Gf2 located in one side of the guideplate, said notch in the instance illustrated being formed by bending or swagin g the metal of the guide-plate, so as to form an ofi-set part or yoke E3.

As a separate and further improvement I have provided a novel construction in the die-plate, as follows: I-I indicates the printing-die, and I a base on which the said printing-die is mounted or supported. Said dieplate D is made of sheet metal and is provided at its ends with integral extensions, which are bent outwardly from the plane of the plate at one side thereof to form the guideplates E or similar guide-plates of different form. Said die-plate is also provided at its side margins with holding-flanges d, which are bent outwardly from the side of said plate opposite that at Which'thc guide-plates are located. Said flanges are inclined inwardly at their free edges to give dovetailed form to the recess formed or inclosed by the same. The base to which the die is attached is inclined at its edges to correspond with the iianges d d, and said base I is adapted to `fit between said flanges, so that it will be held thereby in contact with the die-plate. The printing-die I-I being permanently attached to the base I constitutes, in fact, one piece p with the saine, and said parts maybe molded of one piece ot' rubber, or where the said base I is of sponge-rubber or other material dffer ent from that of which the die is composed they may be made separately and secured together. The die-plate, made with integral guide-plates at its ends and integral lateral inturned flan ges, as described, affords a simple, convenient, and economical construction in said die-plate and a simple means of attaching the printing-die to thedie-plate without theuse of glue, cement, or other similar attaching means.

I claim as my invention-- l. The combination with .a stamp -frame provided with guide-studs, of a die-plate provided with a guide-plate having guide-slots for engagement with said studs, said die-plate having a notch or recess in its outer face for the passage of the said studs in assembling the parts.

2. The combinationv with a stamp-frame provided with guide-studs, of a die-plate provided With a guide-plate having-guide-slots for engagement with the said studs,said guideplate being provided with a slotted yoke which is bent at an angle to the same and forms a notch for the passage of the said studs in assembling the parts.

In testimony that I claim the foregoing as my invention I aiix my signature, in presence of two witnesses, this 18th day of February, A. D. 1890.

LOUIS K. SCOTFQRD.

Vitnesses:

4C. CLARENCE PooLE, CHARLES W. HILLS. 

